A hydrogenation catalyst containing molecular sieve and amorphous silica-alumina

Abstract

The invention discloses a hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum. The composition of the hydrogenation catalyst includes: hydrogenation active metal components, molecular sieves and amorphous silica-alumina, wherein the hydrogenation active metal components are mainly supported on amorphous silica-alumina, amorphous silica-alumina wraps molecular sieves, hydrogenation active metal components In terms of oxides, it accounts for 3%~100% of the weight of amorphous silicon aluminum, and the weight ratio of molecular sieve to amorphous silicon aluminum is 1:19~19:1. The hydrogenation catalyst of the invention fully isolates the hydrogenation active metal from the acid center of the molecular sieve, adjusts the hydrogenation function and the acidic function, and is especially suitable for a hydrogenation catalyst with relatively high acidity requirements and relatively low hydrogenation performance requirements.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum and a preparation method thereof. Background technique [0002] Hydrocracking technology is one of the important means for the secondary processing of crude oil and the lightening of heavy oil. Because of its strong adaptability to raw materials, flexible production operations and product solutions, and good product quality, it has become an important way to produce high-quality light clean oil products and solve the source of chemical raw materials. [0003] Hydrocracking catalysts are generally dual-functional catalysts, and their cracking activity and hydrogenation activity are respectively provided by the acidic component and hydrogenation active component in the catalyst. [0004] The acidic component of the catalyst is generally provided by molecular sieves contain...

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Problems solved by technology

Among them, the carrier material is prepared by directly adding molecular sieves in the process of forming amorphous silica-alumina. In this way, amorphous silica-alumina is prone to agglomeration, and it is also easy to enter the pores of the other party or block the pores of molecular sieves, which affects the amorphous silica-alumina. The distribution on the molecular sieve, the poor connectivity between the molecular sieve and the amorphous silica-alumina channel, reduces the specific surface area and pore volume of the catalyst, and the distribution of active metals is not easy to control, which makes the hydrogenation function of the catalyst mismatch with the cracking function, affecting the catalyst performance